US 2026/0177150 A1 · REPAIRABLE VALVE

Abstract

Repairable valve with in-line replaceable stem. A bracket fixedly supported from the valve body has a stem opening aligned with the stem bore. A shear bushing rotatably receives a first end of the stem and a second end of the stem engages the flow control element. The bushing is rotatably disposable axially between the bracket and a stem shoulder. The bushing has a profile cooperating with a profile of the stem opening for selective retention of the valve stem by the bracket or release of the shear bushing and valve stem for axial passage through the stem opening. Also, repairable trim with downstream seats removable by a tool inserted through the inlet end; trim insertable as a cartridge; trim with a lapped downstream seat land; hub end connectors; bidirectional valves; and methods and tools for assembling and servicing the valves.

Claims28

Dependent claims

A valve (100) comprising:

a valve body (102) comprising a flow bore (104) and a stem bore (158);
a flow control element (106) rotatably disposed in the flow bore;
a bracket (150) fixedly supported from the valve body and comprising a stem opening (162) aligned with the stem bore;
a valve stem (108) rotatably disposed in the stem bore and comprising a first end (160) disposed in a central bore (193) of a shear bushing (186) adjacent the bracket, a stem shoulder (182) to engage the shear bushing adjacent the first end, and a second end (156) engaging the flow control element;
and
a bushing profile (187) of the shear bushing cooperating with an opening profile (163) of the stem opening for selective retention and release of the valve stem, wherein the shear bushing is rotatable between a stem release position (165), wherein the bushing profile is aligned with the opening profile and the shear bushing can pass through the stem opening, and a stem retention position (167), wherein the bushing profile is offset with respect to the opening profile and the bracket and stem shoulder engage opposite sides of the shear bushing to retain the valve stem in the stem bore.

3 more elements

A method of assembling and disassembling a valve, comprising:

providing a valve body with a bracket supported from the valve body;
wherein a flow bore is formed through the valve body;
wherein a stem opening is formed through the bracket;
wherein a stem bore is formed in the valve body to the flow bore in alignment with the stem opening;
inserting valve trim through one end of the flow bore, wherein the valve trim comprises a flow control element, a downstream seat to form a seal between the valve body and the flow control element, and an upstream seat to bias the flow control element against the downstream seat, wherein the flow control element floats between the upstream seat and the downstream seat;
installing a retainer having an annular structure;
inserting a first end of a valve stem into a central bore of a shear bushing;
inserting the valve stem into the stem opening;
radially aligning the shear bushing with respect to the bracket in a stem release position wherein a bushing profile of the shear bushing cooperates with an opening profile of the stem opening for axial passage of the shear bushing through the stem opening;
axially positioning the shear bushing between the bracket and a stem shoulder on the valve stem;
inserting a second end of the valve stem into the stem bore to engage the flow control element;
rotating the shear bushing into a stem retention position wherein the bushing profile is offset from the opening profile and the bracket and the stem shoulder engage opposite surfaces of the shear bushing to retain the valve stem in the stem bore;
engaging a bushing retention member to secure the shear bushing in the stem retention position;
turning the valve stem to rotate the flow control element between open and closed positions;
disengaging the bushing retention member;
rotating the shear busing into the stem release position;
passing the shear bushing through the stem opening away from the valve body to disengage the second end of the valve stem from the flow control element and remove the valve stem from the stem bore;
removing the retainer from the one end;
removing the upstream seat assembly and the flow control element through the one end;
and
removing at least a portion of the downstream seat through the one end.

18 more elements

Dependencies are inferred from the claim text.

Repairable valve

Life of this patent

Repairable valve

Life of this patent

Abstract

Claims28